Eponyms?

[Brian Austin]

I am spending some of my 'shelter in place' time researching words
that are derived from people's name ('boycott', 'sideburns', etc.) Two
questions:

1. Is there a name for such words? I thought it would be 'eponym', but
the dictionary definition doesn't seem to apply.

2. The derivation of the word 'chesterfield' is unclear. Several
dictionaries point to a '19th c. earl of Chesterfield', but the
Wikipedia entries for the various earls (there were two or three in
the 1800s) don't mention any connection to overcoats or sofas. Can
anybody provide more information? Which earl? And why the association
with overcoats or sofas?

Everybody stay safe.

--- Brian

[Kai Burghardt]

[...] researching words that are derived from people's name
1. Is there a name for such words? I thought it would be 'eponym', but
the dictionary definition doesn't seem to apply.

Yes, it is "eponym".

Both, https://en.wiktionary.org/wiki/boycott as well as
https://en.wiktionary.org/wiki/sideburns are members of the category
"English Eponyms" https://en.wiktionary.org/wiki/Category:English_eponyms